Cybersecurity
Updated
Zero trust is not a product and it is not a project to block every connection. NIST describes it as an approach that removes implicit trust based only on network location or device ownership and focuses protection on resources. In senior living operations, that means granting the right access to a verified person or service, from an acceptable device, for a defined purpose, while preserving safe care and facility workflows.
The deployment must account for shared clinical stations, shift changes, agency or contract staff, pharmacy and EHR portals, building systems, resident and guest connectivity, remote vendors, and emergency access. A generic network-hardening checklist cannot resolve those identity and workflow decisions.
Begin with care and facility workflows
Map the resources and transactions that matter before selecting controls. Follow a medication or care-documentation workflow from sign-in through application access, printing, handoff, and downtime procedure. Do the same for admissions, billing, communications, physical access, nurse call, environmental systems, and vendor maintenance where applicable.
| Resource group | Access questions | Failure consequence to plan for |
|---|---|---|
| Care and resident records | Which roles need which records, from which managed devices, and under what emergency process? | Delayed care, unsafe workaround, or inappropriate disclosure |
| Business systems | How are finance, HR, admissions, and executive privileges separated? | Fraud, payroll disruption, or sensitive-data exposure |
| Shared workstations and mobile devices | How is the individual user verified and the session cleared between users? | Attribution failure or access under another person's session |
| Building and care-support technology | Can each device be identified, updated, monitored, and restricted to required communications? | Operational disruption or a path into other systems |
| Vendors and remote support | Who approves access, how is it limited, and when does it expire? | Unobserved persistent access or weak third-party credentials |
| Resident and guest services | What must remain separate from managed business and care resources? | Unmanaged devices reaching protected environments |
Not every senior living organization has the same services or regulatory obligations. Determine which privacy, health, payment, contractual, and state requirements apply with qualified advisors. Zero trust can support risk management, but it does not by itself establish compliance.
Establish identity before adding friction
Use one authoritative joiner, mover, and leaver process for employees, agency staff, contractors, service accounts, and vendors. Every account should have a responsible owner, an approved role, and a lifecycle. Shared user accounts weaken attribution and should not be the default response to shared devices.
- Require stronger authentication for workforce and administrative access based on the organization's risk and application capabilities.
- Separate routine work from privileged administration and keep the number of privileged identities limited.
- Review role changes promptly so transferred staff do not accumulate access from prior positions.
- Use time-limited, approved vendor access rather than permanent remote entry that nobody routinely reviews.
- Maintain controlled emergency-access methods, protect them from routine use, and review every activation.
Measure device confidence by workflow
A known user on an unknown or unhealthy device is a different risk from the same user on a managed workstation. Inventory supported endpoints and care-support devices, assign owners, maintain update and protection status, and decide which resource classes each device type may access.
Shared stations need a design that supports rapid individual sign-in, automatic locking, session separation, and local downtime procedures. Personally owned, resident, guest, and unsupported devices should not inherit access because they are physically inside the facility. When a legacy care or building device cannot support modern controls, isolate its communications, document the dependency and owner, monitor it, and maintain a replacement or compensating-control decision.
Move from broad network trust to resource policy
Network separation still matters, but zero trust does not stop at VLANs. Define policy around the requested resource, user role, device state, location or risk signals, and session behavior. Keep resident and guest access separate from business and care systems. Limit building, camera, voice, nurse-call, and other connected systems to the destinations and management paths they actually require.
For cloud applications, review tenant configuration, application consent, administrative roles, external sharing, legacy authentication, session controls, and logs. For on-premises applications, document how identity and device decisions are enforced and where older technology creates exceptions.
Deploy in evidence-based waves
- Select one workflow. Choose a meaningful but bounded process and document its users, devices, applications, data, dependencies, and downtime procedure.
- Observe before enforcing. Use available sign-in, endpoint, network, and application evidence to find service accounts, old clients, vendor paths, and unusual locations.
- Fix identity and device ownership. Remove stale access, assign service accounts, enroll supported devices, and document necessary exceptions.
- Pilot with representative users. Include different shifts, shared-station users, remote leaders, temporary staff, and support personnel.
- Test normal and failure paths. Exercise sign-in, device replacement, staff transfer, vendor support, identity outage, emergency access, and policy rollback.
- Enforce with support ready. Publish the change, help path, escalation owner, and rollback criteria before broadening the policy.
- Expand by resource group. Reuse what worked, but reassess context instead of cloning one policy across every system.
Control exceptions as operating decisions
Senior living operations will encounter real exceptions: an unsupported clinical application, a vendor that cannot use the preferred access method, a device that cannot run an agent, or an emergency workflow where delay creates risk. Hiding those exceptions is worse than documenting them.
For each exception, record the resource, business reason, requester, approving risk owner, affected users and devices, alternative protections, monitoring, expiration or review date, and replacement plan. An exception should not silently become the permanent architecture.
Review outcomes that expose weak trust decisions
Use measures that lead to action rather than a single "zero trust percentage." Review workforce and privileged accounts without current owners, stale vendor access, unsupported devices reaching sensitive resources, policy failures by workflow, emergency-access events, high-risk sign-ins investigated, exceptions past review, and the time required to remove access after a role change or departure.
Pair the numbers with a short narrative: what changed, which resident or business workflow was affected, whether the control behaved as designed, what was learned from support cases, and what decision leadership must make next.
Related security guides
- Review the core zero trust model for smaller organizations.
- Strengthen credential-abuse prevention for critical workloads.
- Test care-dependent decisions with a ransomware tabletop.
Primary sources
- NIST SP 800-207: Zero Trust Architecture
- NIST SP 1800-35: Implementing a Zero Trust Architecture
- CISA Zero Trust Maturity Model
- HHS Healthcare and Public Health Cybersecurity Performance Goals
- Microsoft guidance for securing infrastructure with zero trust
Suggested next step
Talk with Cloud Core MSP if you need to map a care-critical workflow, expose identity and device exceptions, and plan a controlled zero trust pilot.